Masteries

Offense:
21

Defense:
0

Utility:
9

I personally fail every game I play AP Kat so I stick to this with a small margin of substitutes. This is exactly how I play Kat every game I select her. Any of the damage items here can be increased/decreased. I.E. Here: Bloodthirster x2 Inf Edge x1 Black Cleaver x1. Feel free to: Bloodthirster x5, or Inf Edge x4 or whatever makes your enemies explode and you smile.